GitLab

* master: (150 commits)
  fixes margin and padding
  Update mailroom/postfix documentation [ci skip]
  Fix css mess around git clone panel. Align it properly
  Fix missing padding for user/group pages
  Fix parse_gollum_tags matcher
  Update documentation on Banzai::Filter::GollumTagsFilter
  Add tests for the wiki pipeline
  Refactoring Banzai::Filter::GollumTagsFilter
  Make sure the .git is at the end on Gitlab::GithubImport::WikiFormatter
  Remove GollumTagsPipeline
  Refactoring Gitlab::GithubImport::Importer
  Remove unnecessary brackets on WIKI_SLUG_ID route constraints
  Move js function to removing accents to vendor/assets/javascripts
  Update CHANGELOG
  Use the WikiPipeline when rendering the wiki markdown content
  Add Banzai::Filter::GollumTagsFilter for parsing Gollum's tags in HTML
  Relax constraints for wiki slug
  Import GitHub wiki into GitLab
  Move Ci::Build#available_statuses to AVAILABLE_STATUSES constant in CommitStatus
  Revert changes to...